Adjustable wrench



@@. 2% w23. www? C. A. DIES ADJUSTABLE WRENCH Filed Sept. 29. 1922 Patented Cet. 23, i923.

NETE@ l i garant orarie ando CHARLES A. DIES, 0F CHICAGO, ILLINOIS.

ADJUSTABLE WRENCH.

Application led September 29, 1922. Serial No. 591,231.

To all w /iom t may concern.'

Be it known that I, CHARLES A. DIES, a

citizen of the United States of America, re-

initial movement of the operating handle to attain an even and substantial beai'ing engagement. of the jaws upon a nut or other article operated on, and the present improvement has for its objects To provide a formation and assembly of the operating cam member between the operating handle and the movable wrench jaws, adapted to effect maximum closing and opening movements of the wrench jaws with a minimum movement of operating handle of the wrench, in a durable and effective inanner.

To provide means for effecting an adjustment or set between the wrench jaws to suit different sizes of work to be'operated on, and which is capable of convenient adjustment and effective holding at such adjustment, all as will hereinafter more fully apear. p In the accompanying drawings Fig. 1, is a side elevation illustrating the preferred formation and arrangement of parts in the present improvement. Fig. 2, is a sectional elevation of the same on line 2 2, Fig. 4, and showing the wrench jaws in a position ready for engagement.

Fig. 3, is a companion sectional elevation -showing the jaws in their gripping position.

Fig. 4, is a longitudinal section on line 4 4, Fig. 1; l

Fig. 5, isa perspective view of the cam vhead or block;

Fig. 6, is a side elevation of a modification. K

Like reference numerals indicate like parts in the several views.

Referring to the drawings, 1 designates the main jaw member having at one end an angularly disposed work engaging jaw 2, and havnof a rear portion formed by a pair of cheek plates 3 in spaced parallel relation, formed with a guide-way for the shank portion of the companion jaw member hereinafter described. The cheek plates 3 are also formed Iwith central fulcrum orifices for the hereinafter-described cam head or member by which limited movement of the companion jaw member with relation to the main jaw member l is effected. The fulcrum orifices just referred to are of an approximately triangular form with the rear apeXes thereof formed by rounded fulcrum sockets 4 and 5, as shown in Figs. 2 and 3.

6 designates the body portion of the com- Y panion jaw member above referred to, of an approximately triangular form and hav'ino` near its forward end a transverse rib adapted for sliding engagement with .the

- guideway of the aforesaid cheek plates 3.

At one end the body portion 6 has a forwardly extending work-engaging 8 in opposed relation to the jaw of the main member 1 aforesaid, while the rear part of said portion 6 is formed into an open frame or yole 9, to permit insertion and limited play of the operating cam head above referred to. In the present improvement the opening of the yolre 9 is formed with a forwardly eX- teiiding fulcrum recess 10 for operative engagement with an operating cam 1rug of vsaid cam head.

1l designates the operating handle of the wrench, formed of plate sections attached together along their length, with such sections provided with the usual reinforcing ribs as shown. At their forward ends the plate sections are separated to' provide a pair of parallel heads 12, 12, between which the cheek plates 3 of the main member 1 are confined and guided in actual use of the wrench. In the present construction the heads 12, 12, have iiXed attachment with the operating cam head now to be described.A

The cam head heretofore referred to comprises a shaft member 13 having non-circular heads 14 at its respective ends for engagement in similarly formed orifices in the handle heads 12 aforesaid.

15 designates a forwardly extending cam -lug formed on the middle portion of the shaft member 13 aforesaid and having operative engagement in the fulcrum recess 7 of the jaw member above described to attain independent movement of the same to andl from the main jaw member 1.

16 designates a pair of vrearwardly eX- tending cam lugs formed on the shaft meniber 13 at the respective sides of the cain lug 15 and having rounded ends 17 adapted for lio bearing engagement in the fulcrum sockets 4 and 5 of the main jaw member 1, and Vare so positioned as to provide rocking abutments for the cam head in its movements under the influence of the operating handle 11 to effect an engagement or a disengagement of the wrench aws and the work op` erated on. By the arrangement of the cam lug 15 at one side of the shaft portion 13 of the cam head and the arrangement of the cam lugs 16 at the other side of said shaft portion 13,l as above described, a movement of the operating handle 11, fixedly connected to the cam head, will cause a simultaneous movement of the jaw members 2 and 8 in opposite directions with relation to a median line passing through `the shank portion of the cam head, with the combined movement of the jaws lamounting to double the amount of turning movement imparted to the cam head by the operating handley 11.

It is within the scope of the invention to make the body portion 6, jaw 8 and yoke 9 of the wrench member aforesaid, of. a single piece formation. In the preferred construction shown the wrench member is made in two sections having adjustment to and from each other and adapted for fixed engagement by interengaging teeth 18 in their abut-ting faces as shown. In such construc1- tion the rear section which includes the frame or yoke 9 has limited rearward movement to permit of the disengagement and re-engagement of the parts in the operation of changing the opening or space between the jaws to suit the size of the article to be operated.

19 designate notches formed in the oppo site surfaces of the frame or yoke 9, to afford finger holds in effecting a manual adjustment of parts just described.

20 designates a spring arranged to the rear of the body portion 6 aforesaid, the tendency of which is to hold the above described sectional members thereof in the engaged condition and also to provide frictional retardance to a turning movement of said `body portion with relation to the operating cam head aforesaid.

In the modification shown in Fig. 6, a fixed finger pin or stud 21 on the frame or yoke 9 has movement or play in a T-shape slot 22 in the cheek plates 3 of the main jaw member 1, to attain the heretofore described members with relation to veach other and preliminary adjustment of the wrench jaws to suit the size of the work operated on.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent, is :-V

1. In a wrench, the combination of a pair of wrench heads slidingly `connected together and having orificed rearward extensions, a cam head arranged in the orifices of said extensions and having a forwardly extending `lug for opera-tive engagement with one wrench head and a rearwardly extending lug` for operative engagement with the other wrench head-and adapted to impart simultaneous movement to the wrench jaws `in opposite directions, and a rockingV handle fixedly connected to said cam head. 2. In a wrench, the combination of a pair of wrench heads slidingly connected together and having oriiiced rearwarde'xtensions, a cam head arranged in the orifices of said extensions and having a forwardly extending lug for operative engagement with one wrench head yand with lpairs of rearwardly extending lugs for operative engagement with the other wrench head'and adapted to impart simultaneous movement to the wrench jaws in opposite directions,

and a rocking handle fixedy connected to V said cam head.

3. In a wrench, the Vcombination of a pair of ywrench heads slidingly connected together and having oriiced rearward extensions, a cam head arranged in the orifices of said extensions and having a forwardly extending lug for operative engagement with one wrench head and a rearwardly lextending lug' for operative engagement with the other wrench head and adapted to impart simultaneous movement to the wrench jaws in opposite directions, and a rocking handle fixedly secured to said cam head, one of said wrench heads being formed in sections detachably by interengaging teeth. Y

4. In a wrench, the combination of a pair of wrench heads slidingly connecte-d to-l gether and having orificed rearward ext-enconnected together sions, a cam head arranged in the orifices of said extensions and having a forwardly extending lug for operative engagement with one wrench head and with pairs of Y rearwardly extending lugs for operative engagement ,withthe other wrench head and adapted to impart simultaneous movement to the wrench jaws in opposite' directions, and a rocking handle ixedly connected to said cam head, one of said Wrenchheads being formed in sections detachably Vconnected together by interengaging teeth. j

5. In a wrench, the combination'of a main jaw member having at one end a holding jaw and at its rear cheek plates formed with fulcrum orifices, a companion "jaw member having at one end holding'jaw and at its rear an extension formed with a fulcrnm re-. Y Y

cess, a cam head having a forwardly ex-` tending lug for` operative engagement with n lli names? the fulcrum recess of the companion jaw member and rearwardly extending lugs for operative engagement With the cheek plates of the main jaw member, and a rocking handle having a forked end embracing the aforesaid cheek plates and fixedly secured to said cam head.

6. In a Wrench, the combination of a main jaw member having at one end a holding jaw and at its rear cheek plates formed with fulcrum orifices, a com anion jaw member having at. one end holt ing jaw and at its rear an extension formed with a fulcrum recess, a cam head having a forwardly extending lug for operative engagement with the fulcrum recess of the companion jaw member and with pairs of rearwardly extending lugs for operative engagement with the cheek plates ofthe main jaw member, and arocking handle having a forked end embracing the aforesaid cheek plates and fixedly secured to said cam head.

7. ln a wrench, the combination of a main j aw member having at one end a holding aw and at its rear cheek plates formed with fulcrnm orifices, a companion jaW member having at one end holding jaw and at its rear an extension formed with a fulcrnm recess, a cam head having a. forwardly extending lug for operative engagement with the fulcrum recess of the companion jaw member and rearwardly7 extending lugs for operative engagement with the cheek plates of the main aw member, and a rocking handle having a forked end embracing the aforesaid cheek plates and iixedly secured to said cam head, the companion wrench head being formed in sections deitachably connected together by interengaging teeth.

8. In a. wrench, the combination of a main jaw member having at one end al holding jaw and at its rear cheek plates formed with fnlcruni orifices, a companion jaw member having atvone end holding jaw and at its rear an extension formed with a fulcrum recess, a cam head having a forwardly extending lng for operative engagement with the fulcrum recess of the companion jaw member and with pairs of rearwardly extending lugs for operative engagement with the lcheek plates of the main jaw member, and a rocking handle having a forked end embracing the aforesaid cheek plates and lixedly secured to said cam head, the companion Wrench head being formed in sections detachably connected together by interengaging teeth.

9. ln a Wrench, the combination of a main jaw member having at one end a holding jaw and at its rear cheek plates formed with fulcrum orifices, a companion jaw member having at one end holding jaw and at its rear an extension formed with a fulcrum recess, a cam head having a forwardly extending lug for operative engagement with the fulcrum of the companion jaw member and with pairs of rearwardly extending lugs for operative engagement with the cheek plates of the main aW member, and a rocking handle lixedly connected to said cam head, one of said Wrench heads being formed in sections detachably connected together by interengaging teeth, and a spring adapted to hold said sections in engagement.

l0. ln a wrench, the combination of a main aw member having at one end a holding jaw and at its rear cheek plates formed with fulcrnm orifices, a companion jaw member having at one end holding jaw and at its rear an extension formed with a fulcrum recess, a cam head having a forwardly extending lug for operative engagement with the fulcrum recess of the companion jaw member and with pairs of rearwardly extending lugs for operative engagement with the cheek plates of the main jaw members, a rocking handle having a forked end embracing the aforesaid cheek plates and fixedly secured to saidcani head, the companion'wrench head being formed in sections detachably connected together by inter-engaging teeth, and a spring-'adapted to hold said sect-ions in engagement.

Signed at Chicago, Illinois, this 26th day of September, 1922.

CHARLES A. DfES. 

